
Introduction • 3
1.3 Specifications
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Digital I/O (DIO)
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Numbers of Channel:
32 TTL compatible inputs and/or outputs
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Device:
IDT 74FCT373
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I/O Configurations:
16 DI & 16 DO
32 DI
32 DO
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Input Voltage:
• Low: Min. 0V; Max. 0.8V
• High: Min. +2.0V
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Input Load:
• Terminator OFF:
Low: +0.5V @ ±20 mA
High: +2.7V @ ±1 mA max.
• Terminator ON:
Termination resistor: 110 Ohms
Termination voltage: 2.9V
Low: +0.5V @ ±22.4mA
High: +2.7V @ ± 1mA max.
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Output Voltage:
• Low: Min. 0V; Max. 0.5V
• High: Min. +2.7V
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Driving Capacity:
• Low: Max. +0.5V at 48mA (Sink)
• High: Min. 2.4V at -8 mA (Source)
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Hysteresis: 500mV
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Transfer Characteristic
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